core: renames in io.systemd.Manager (#37582)

1. rename sources to follow `core/varlink-*` patter per @YHNdnzj's
comment in
https://github.com/systemd/systemd/pull/35098#issuecomment-2876509919
2. camelCase Context/Runtime in varlink spec. Varlink fields are
camelCase unless well defined config names.

src/core/meson.build

@@ -43,7 +43,6 @@ libcore_sources = files(
         'load-fragment.c',
         'manager-dump.c',
         'manager-serialize.c',
-        'manager-varlink.c',
         'manager.c',
         'mount.c',
         'namespace.c',
@@ -65,6 +64,7 @@ libcore_sources = files(
         'unit.c',
         'varlink.c',
         'varlink-common.c',
+        'varlink-manager.c',
 )
 
 subdir('bpf/socket_bind')

src/core/varlink-manager.c

@@ -9,7 +9,6 @@
 #include "build.h"
 #include "confidential-virt.h"
 #include "json-util.h"
-#include "manager-varlink.h"
 #include "manager.h"
 #include "set.h"
 #include "strv.h"
@@ -17,6 +16,7 @@
 #include "taint.h"
 #include "version.h"
 #include "varlink-common.h"
+#include "varlink-manager.h"
 #include "virt.h"
 #include "watchdog.h"
 
@@ -167,8 +167,8 @@ int vl_method_describe_manager(sd_varlink *link, sd_json_variant *parameters, sd
                 return r;
 
         r = sd_json_buildo(&v,
-                        SD_JSON_BUILD_PAIR_CALLBACK("Context", manager_context_build_json, manager),
-                        SD_JSON_BUILD_PAIR_CALLBACK("Runtime", manager_runtime_build_json, manager));
+                        SD_JSON_BUILD_PAIR_CALLBACK("context", manager_context_build_json, manager),
+                        SD_JSON_BUILD_PAIR_CALLBACK("runtime", manager_runtime_build_json, manager));
         if (r < 0)
                 return log_error_errno(r, "Failed to build manager JSON data: %m");
 

src/core/varlink.c

@@ -7,7 +7,6 @@
 #include "errno-util.h"
 #include "json-util.h"
 #include "manager.h"
-#include "manager-varlink.h"
 #include "path-util.h"
 #include "pidref.h"
 #include "string-util.h"
@@ -19,6 +18,7 @@
 #include "varlink-io.systemd.ManagedOOM.h"
 #include "varlink-io.systemd.UserDatabase.h"
 #include "varlink-io.systemd.service.h"
+#include "varlink-manager.h"
 #include "varlink-serialize.h"
 #include "varlink-util.h"
 

src/shared/varlink-io.systemd.Manager.c

@@ -170,9 +170,9 @@ static SD_VARLINK_DEFINE_STRUCT_TYPE(
 static SD_VARLINK_DEFINE_METHOD(
                 Describe,
                 SD_VARLINK_FIELD_COMMENT("Configuration of the manager"),
-                SD_VARLINK_DEFINE_OUTPUT_BY_TYPE(Context, ManagerContext, 0),
+                SD_VARLINK_DEFINE_OUTPUT_BY_TYPE(context, ManagerContext, 0),
                 SD_VARLINK_FIELD_COMMENT("Runtime information of the manager"),
-                SD_VARLINK_DEFINE_OUTPUT_BY_TYPE(Runtime, ManagerRuntime, 0));
+                SD_VARLINK_DEFINE_OUTPUT_BY_TYPE(runtime, ManagerRuntime, 0));
 
 SD_VARLINK_DEFINE_INTERFACE(
                 io_systemd_Manager,